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Robin_Peng
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您好!

请问下:CYPD3177-24LQXQ和CYPD3177-24LQXQT 有什么区别,2个芯片是否可以等效替换。

谢谢。

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YiZ_31
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CYPD3177只有一种封装, T = Tape and Reel,就是卷带包装,没有 T的是Tray 托盘包装。2个芯片是一样的,可以等效替换。

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YiZ_31
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CYPD3177只有一种封装, T = Tape and Reel,就是卷带包装,没有 T的是Tray 托盘包装。2个芯片是一样的,可以等效替换。

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Robin_Peng
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您好,

客户目前使用Cypd3177进行设计,Cypd3177放在客户的设备端,然后,使用标准的PD充电头给设备进行充电,客户想在PD端添加一个手动的个机械开关,加在哪里合适?这个开关就类似于系统电源开关,红框位置是否合适,谢谢

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YiZ_31
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红框位置可以

开关用于切断CYPD3177的供电就可以。

Robin_Peng
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收到,非常感谢!

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YiZ_31
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VBUS_IN也可以给CYPD3177供电,那个3.3V VDDD也不要供电啊,不然会有问题。

Robin_Peng
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好的,收到,

一般船型开关是机械开关,会有毛刺或者震荡,您那有什么建议吗?

谢谢!

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YiZ_31
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有插头插入的时候保证CYPD3177正常工作就可以,他这个对电源要求不是很高。

Robin_Peng
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您好!原厂的朋友,

您那能帮我看下About CY7C65211     这个帖子吗?

谢谢

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Robin_Peng
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您好,

您说:“VBUS_IN也可以给CYPD3177供电,那个3.3V VDDD也不要供电啊,不然会有问题。”

意思是:(1)添加机械开关的话,要同时控制VDDO和VBUS_IN 引脚是吗?同时断电?

                (2)可不可以只通过BUS_IN给CYPD3177供电,VDDO不接3.3V?

               (3)若同时控制VDDO和VBUS_IN 两个引脚的话,不太好控制,有建议的机械开关位置吗?谢谢

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YiZ_31
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只要你们VDDD没有外部供电就断VBUS_IN就可以了。(本身VDDD这个引脚是不需要外部供电的,没有意义)

Robin_Peng
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收到了,谢谢,

那VDDD引脚就是悬空处理吗?还是不用任何处理。

谢谢

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YiZ_31
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解耦电容还是要的。。。

Robin_Peng
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您好,我看片子有3种模式, Active, Sleep, and Deep Sleep  ,请问这三种模式都是在什么情况下使用呢?

谢谢

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Robin_Peng
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您好,

通过查手册:Sleep: ~3.5 mA; Deep Sleep: 50 µA   ,这两种模式应用在什么场景呢?想不到应用到深度睡眠的情形,

谢谢。

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YiZ_31
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这个应该就是你给VDDD外部供电时CYPD3177深度睡眠的数值,但是其实这时候并不需要给他供电。

Robin_Peng
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您好!

抱歉,还是有些不太理解,Active、Sleep、Deep Sleep 这三种模式下,这3种模式具体什么场景下应用?正常工作的情况下,应该使用Active,两外两种模式在什么情况下使用呢?Sleep、Deep Sleep是否有必要使用?

谢谢。

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YiZ_31
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Datasheet中都有相应的描述,此外这个片子是不可编程器件,客户也无需手动设置Sleep, Deepsleep。这里的场景有些是适用于片子常供电,外部MCU需要通过I2C不断配置CYPD3177的情况。

Regards,

Eddie

Robin_Peng
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您好,

非常感谢。

请问下如VBUS_IN这条链路中的电流是对大,

谢谢

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YiZ_31
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就是IDD_A的数值

Robin_Peng
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收到,谢谢您。

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